Annual report pursuant to Section 13 and 15(d)

Income Taxes - Reconciliation of Income tax Expense from Continuous Operation (Detail)

v3.6.0.2
Income Taxes - Reconciliation of Income tax Expense from Continuous Operation (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Income Tax Disclosure [Abstract]      
Federal statutory tax expense $ 19,216 $ 18,343 $ 16,103
State tax expense 188 1,249 892
Foreign taxes at rates less than U.S. rates (6,838) (1,760) (3,097)
Deferred charges on sales of U.S. intellectual property 980 (5,878) 0
Stock compensation expense on incentive stock options (530) 204 93
Tax credits (911) (935) (862)
Uncertain tax position 485 3,897 1,163
Lapse of statute (495) (784) (652)
Change of valuation allowance on foreign tax credit 0 0 (491)
Earnout adjustment (1,184) 0 0
Tax audits 543 0 0
Other 855 149 382
Total expense $ 12,309 $ 14,485 $ 13,531